128532 has 12 divisors (see below), whose sum is σ = 299936. Its totient is φ = 42840.

The previous prime is 128521. The next prime is 128549. The reversal of 128532 is 235821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 128499 and 128508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5344 + ... + 5367.

2¹²⁸⁵³² is an apocalyptic number.

128532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128532 is an abundant number, since it is smaller than the sum of its proper divisors (171404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128532 is a wasteful number, since it uses less digits than its factorization.

128532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10718 (or 10716 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 128532 is about 358.5135980685. The cubic root of 128532 is about 50.4665661127.

The spelling of 128532 in words is "one hundred twenty-eight thousand, five hundred thirty-two".